// Vue自定义指令
import Vue from 'vue'

// 弹窗拖动
Vue.directive('dialogMove', {
  bind(el) {
    const dialogHeaderEl = el.querySelector('.el-dialog__header')
    const dragDom = el.querySelector('.el-dialog')
    dialogHeaderEl.style.cursor = 'move'
    // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
    const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null)

    dialogHeaderEl.onmousedown = e => {
      // 鼠标按下，计算当前元素距离可视区的距离
      const disX = e.clientX - dialogHeaderEl.offsetLeft
      const disY = e.clientY - dialogHeaderEl.offsetTop

      // 获取到的值带px 正则匹配替换
      let styL, styT

      // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
      if (sty.left.includes('%')) {
        styL = +document.body.clientWidth * (+sty.left.replace(/%/g, '') / 100)
        styT = +document.body.clientHeight * (+sty.top.replace(/%/g, '') / 100)
      } else if (sty.left === 'auto' || sty.top === 'auto') {
        // 注意 ie中 top,left,right,bottom默认值是auto
        styL = dragDom.offsetLeft
        styT = dragDom.offsetTop
      } else {
        styL = +sty.left.replace(/\px/g, '')
        styT = +sty.top.replace(/\px/g, '')
      }
      // styL = dragDom.offsetLeft;
      // styT = dragDom.offsetTop;

      document.onmousemove = function(e) {
        // 通过事件委托，计算移动的距离
        const l = e.clientX - disX
        const t = e.clientY - disY

        // 移动当前元素
        dragDom.style.left = `${l + styL}px`
        dragDom.style.top = `${t + styT}px`

        // 将此时的位置传出去
        // binding.value({x:e.pageX,y:e.pageY})
      }

      document.onmouseup = function() {
        document.onmousemove = null
        document.onmouseup = null
      }
    }
  }
})

// drawer缩小
Vue.directive('drawerResize', {
  bind(el) {
    const resizeDom = el.querySelector('.el-drawer')
    var span = document.createElement('span')
    var icon = document.createElement('i')
    resizeDom.style.transition = 'all linear 0.1s'
    span.style.cssText =
      'width:30px;height:30px;text-align:center;line-height:30px;position:absolute;top:50%;left:0;marin-top:-15px;background-color:#ddd;cursor:pointer;'
    icon.style.cssText = 'font-size:18px;color:#31469f'
    icon.className = 'el-icon-d-arrow-right'
    span.appendChild(icon)
    span.onclick = () => {
      let width = resizeDom.style.width
      if (width === '30px') {
        resizeDom.style.width = '60%'
        resizeDom.style.minWidth = '700px'
        icon.className = 'el-icon-d-arrow-right'
      } else {
        resizeDom.style.width = '30px'
        resizeDom.style.minWidth = 'unset'
        icon.className = 'el-icon-d-arrow-left'
      }
    }
    resizeDom.appendChild(span)
  }
})
